cc -pthread -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations wctype/wctype_l.c -o wctype/wctype_l -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt -lintl -liconv wctype/wctype_l.c:5:43: error: ‘wctype_l’ undeclared here (not in a function); did you mean ‘wctype_t’? 5 | wctype_t (*foo)(const char *, locale_t) = wctype_l; | ^~~~~~~~ | wctype_t